# US 11,432,676 B2 · Coffee brewing device

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- Number: US 11,432,676 B2
- Document ID: US11432676B2
- Status: Granted
- Kind: B2
- Application number: 16/577,059
- Filed: 2019-09-20
- Published: 2020-01-09
- Granted: 2022-09-06
- Earliest claimed: 2017-03-21
- Assignees: Suzhou Dr.Coffee System Technology Co., Ltd
- Applicants: Suzhou Dr.Coffee System Technology Co., Ltd
- Inventors: Zicong Huang
- Web page: https://patentgrep.com/patent/US11432676B2

## CPC

- A47J 31/404: {Powder dosing devices}
- A47J 31/3604: {with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations}
- A47J 31/3614: {Means to perform transfer from a loading position to an infusing position}
- A47J 31/0663: {to be used with loose coffee (A47J31/0689 takes precedence)}
- A47J 31/4403: {Constructional details}
- A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES

## Abstract

The present invention discloses a coffee brewing device, which comprises a brewing head assembly, a powder box assembly, a screw assembly, a body fixing frame assembly, a movable frame assembly and a powder guide box assembly which are correspondingly provided. The present invention realizes the direction-variable movement of the powder box assembly in the movement process, and swings to corresponding positions for adding coffee powder, brewing, pushing out residues, scraping residues and realizing restoration.

## Claims

### Claim 1

A coffee brewing device, comprising a brewing head assembly, a powder box assembly, a screw assembly, a body fixing frame assembly, a movable frame assembly and a powder guide box assembly which are correspondingly provided, wherein the body fixing frame assembly comprises a left body fixing frame on the left side and a right body fixing frame on the right side, a direction-variable first movement trajectory is provided on the left body fixing frame, the first movement trajectory comprises two or more segments of movement trajectory, the left body fixing frame is in an integral structural form or a multi-piece structural form, a direction-variable second movement trajectory is provided on the right body fixing frame, the second movement trajectory comprises two or more segments of movement trajectory, the right body fixing frame is in an integral structural form or a multi-piece structural form, and the left body fixing frame and the right body fixing frame jointly realize the direction-variable movement of the powder box assembly, the swinging of the powder box assembly, the movement for adding coffee powder, the movement for pressing coffee powder for brewing, the movement for pushing out residues and the movement for scraping residues, wherein the first movement trajectory comprises a first powder box trajectory, a first residue pushing-out shaft trajectory and a first supporting frame trajectory, points at which the first powder box trajectory is bent from top to bottom are respectively a powder pressing top end A1, a powder box swinging start point B1, a powder box swinging outermost point C1, a residue scraping start point D1 and a residue scraping end point E1, the first residue pushing-out shaft trajectory comprises a residue pushing-out shaft highest point F1 and a residue pushing-out shaft lowest point G1, the first supporting frame trajectory comprises a supporting frame highest point H1 and a supporting frame lowest point I1, the second movement trajectory comprises a second powder box trajectory, a second residue pushing-out shaft trajectory, a second supporting frame trajectory and a residue scraping inclined surface trajectory, points at which the second powder box trajectory is bent from top to bottom are respectively powder pressing top end A2, a powder box swinging start point B2, a powder box swinging outermost point C2, a residue scraping start point D2 and a residue scraping end point E2, the second residue pushing-out shaft trajectory comprises a residue pushing-out shaft highest point F2 and a residue pushing-out shaft lowest point G2, the second supporting frame trajectory comprises a supporting frame highest point H2 and a supporting frame lowest point I2, and the residue scraping inclined surface trajectory comprises a residue scraping inclined surface contact start point J2 and a residue scraping inclined surface contact end point K2.

### Claim 2 (depends on 1)

The coffee brewing device according to claim 1, wherein the first powder box trajectory is a direction-variable trajectory for realizing the swinging and linear movement of the powder box assembly; and the second powder box trajectory is a direction-variable trajectory for realizing the swinging and linear movement of the powder box assembly.

### Claim 3 (depends on 1)

The coffee brewing device according to claim 1, wherein, on the first powder box trajectory, the position from the powder pressing top end A1 to the powder box swinging start point B1 is a trajectory position for realizing powder pressing of the powder box assembly and coffee brewing; the position from the powder box swinging start point B1 to the powder box swinging outermost point C1 is a trajectory position for realizing the swinging of the powder box assembly to a position for adding coffee powder; on the second powder box trajectory, the position from the powder pressing top end A2 to the powder box swinging start point B2 is a trajectory position for realizing powder pressing of the powder box assembly and coffee brewing; the position from the powder box swinging start point B2 to the powder box swinging outermost point C2 is a trajectory position for realizing swinging of the powder box assembly to a position for adding coffee powder.

### Claim 4 (depends on 1)

The coffee brewing device according to claim 1, wherein, on the first powder box trajectory, the position from the powder box swinging outermost point C1 to the residue scraping start point D1 is a trajectory position for realizing residue pushing-out of the powder box assembly; the position from the residue scraping start point D1 to the residue scraping end point E1 is a trajectory position for realizing residue scraping of the powder box assembly; on the second powder box trajectory, the position from the powder box swinging outermost point C2 to the residue scraping start point D2 is a trajectory position for realizing residue pushing-out of the powder box assembly; and the residue scraping start point D2 to the residue scraping end point E2 is a trajectory position for realizing residue scraping of the powder box assembly.

### Claim 5 (depends on 1)

The coffee brewing device according to claim 1, wherein, on the first residue pushing-out shaft trajectory, the position from the residue pushing-out shaft highest point F1 to the residue pushing-out shaft lowest point G1 is a trajectory position for realizing residue pushing-out of a residue pushing-out shaft and a residue pushing-out rod; on the second residue pushing-out shaft trajectory, the position from the residue pushing-out shaft highest point F2 to the residue pushing-out shaft lowest point G2 is a trajectory position for realizing residue pushing-out of the residue pushing-out shaft and the residue pushing-out rod.

### Claim 6 (depends on 1)

The coffee brewing device according to claim 1, wherein, on the first supporting frame trajectory, the position from the supporting frame highest point H1 to the supporting frame lowest point I1 is a trajectory position for realizing that a supporting frame indirectly or directly drives the powder box assembly to move; on the second supporting frame trajectory, the position from the supporting frame highest point H2 to the supporting frame lowest point I2 is a trajectory position for realizing that the supporting frame indirectly or directly drives the powder box assembly to move.

### Claim 7 (depends on 1)

The coffee brewing device according to claim 1, wherein, on the residue scraping inclined surface trajectory, the position from the residue scraping inclined surface contact start point J2 to the residue scraping inclined surface contact end point K2 is a trajectory position for realizing residue scraping of a residue scraper.

### Claim 8 (depends on 7)

The coffee brewing device according to claim 7, wherein a residue scraping torsional spring is provided between the powder box of the powder box assembly and the residue scraper.